Excavator.



A. D. HADSEL.

EXGAVATOR. APPLICATION FILED APR. 29, 1909. RENEWED JULY 12, 1911.

L15,488. Patented' Jan. 23, 1912.

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1015,488. 4 Patented Jan. 23, 1912.

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BXGAVATOR.

ArPLIoATIoN FILED 1211.29, 1909. RBNEWED JULY 12, 1911.

1,015,488. x Y Bahama Jan. 23, 1912.

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EXCMMOR.4 y APPLICATION FILED APR.29, 1909. RENEWED JULI l2, 1911.kPatented Ja11.23, 1912.

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EXCAVATOR. A

APPLICATION FILED APR.29, 1909. RENEWEI) JULY l2, 1911.

1,01 5,488. 4 Patented Jan. 23, 1912.

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@munten ,2f/MQ w, l y?? @M5/4 L UNITED sTATEs PATENT oEEIcE.

i ALVA 1)..HADSEL, 0F WILKES-BARRE, PEN NSYLVANIA, ASSIGNOR T0 CABLEEXCA- 'V'ATOR COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, ACOPARTNERSBIP.

' EXCAVATOB.

Patentedaan. 23,1912.

Application led April 29, 1.909, Serial No. 492,815. Renewed July 12,1911. Serial No. 638,211.

To all whom it may concern.'

Be it known that I, ALvAH D. HADsEL, a citizen of the United States,residing at l/Vilkes-Barre, in the county of Luzerne and State ofPennsylvania, have invented certain new and useful Improvements inExcavators, of which the following is a speciicajf tion.

This invention relates to power excavators and has especial reference tocertain improveniente in this class of invention whereby the same arerendered more easy and certain of manipulation andvhence of greatercapacity for the conveyance ofearth.

The invention consists incertain novel details of construction whichwill be hereinafter fully described and claimed and illustrated' in theaccompanying drawings, in which--` f' Figure 1 is a side elevation ofthe invention; Fig. 2 is a plan view ofthe same; Fig. 3 is a frontelevation and Fig. 4 is a rear ele vation of the same; Fig. 5 is adetail of the steering mechanism; Fig. 6 is a detail of the catchhereinafter described; Fig. 7 is a perspective detail of parts describedbelow; Figs. 8, 9, and 10 are diagrams illustrating three dilferentpositions of theY machine; Figs. 11 and 12illustrate a modification, andFig. 13 is a detail of a part of the machine shown in Figs. 11 and 12.

Throughout the following description and on the several figures of thedrawings similar and corresponding parts are referred to bycorrespondlng reference characters.

In the form of the invention illustrated in Fig. 1 et seg. there is useda distant oWer device in the form of an engine 10, sultably located atany desired stationary position and having independently operated drumsL11 and 12. The excavator proper includes a frame 13 comprising al pairof channel beams 13 and 13, the major portions of which are parallel andsubstantially horizontal while the other portions thereof extendupwardly at one end and converge at their extreme rear ends where theyreceive there L between the journal or head 14 for the steer- Aand 13approximately ing fork 15 in which is mounted the steering wheel 16. Atransverse channel bar 17 is secured rigidly between the main channels13 at the angles between the horizontal and inclined portions strengthenthis portion of the frame and for other purposes to be hereinafternoted. A yoke 18embraces the lower end of the fork 15 and the axle forthe wheel 16is connected thereto as wellas to the fork 15. The frontedge of the yoke 18 is provided with gear teeth 18 provided with a rib18Il parallel to the row of teeth 18. Secured rigidly to the .rear faceof the transverse beam 17 is a bracket 19 which extends downwardlytherefrom and then rearwardly, the rear end thereof embracing said rib18a of the yoke, whereby the yoke is lmaintained in proper operativerelation to the main frame of the machine. A steering wheel 20 iscarried by a shaft 21' suitably journaled in bearings inthe framefincluding a bearing in the horizontal portion ofy said bracket 19.'.Rigidly connected to said shaft 21 andmeshingrl with the rack 18 is apinion 22, whereby't e yoke 18 may be operated to steer the machine..The wheel 20 is located in easy reach of an operator on the platform 23.

T he main channels 13 and 13" near their front ends are pierced by apeculiar axle 24 ,upon the ends of which are secured main' supportingwheels 25. That portion of the axle upon which the main frame is suported is offset or eccentric to the axis ofthe Wheels. By this means themain frame is susceptible of two distinctpositions Vof adand on itslower surface the yoke is Y soA justment. As shown in Fig. 1 in fulllines the frame is held in its elevated position, the eccentric portionof the axle being above the axis of the wheels. By swinging the axleAaround so that the eccentricy portion thereof will come to a lowerosition the frame will .partake of a slight c ange of position withrespect to thewheels as lndicated in dotted lines in the same ligure.One of the means which may be employed for controlling the position ofthe axle 24 consists of a pair of yokes 26, one on each side of theframe and havin shouldered portion of the axle. Each/of ,saidV yokesextends approximately at a right angle to the said shouldered portion ofthe axle 'and' rearwardlyA therefrom when the frame iselevated as shownin Fig. 1. A lug 27 is rigidly connected tveach of the main framechannels and adapted to co rate therewith is a stop 28 secured to the yoe 26. By this means t e rearward movement of the yokes is limited. Apair of catches 29 are pivoted at 30 to the main channels 13' directembracing connection with the -A pair oflinks 32 connect the upper endof the catches 29 with a pair of cranks 33 connected to a rock shaft 34,operated by a leve;` 34 within reach of the operator on the platform.When the operator by this means withdraws the catches 29 from the hooks28 the-front end of the frame and the load carried thereby -willgravitate downwardly swinging the axle through approximately ninetydegrees and carrying the yokes 26 forwardly to a like extent, asindicated in dotted lines in Fig. 1.

The scoop 35 is swung at its front open end on the eccentric portion ofthe axle 24 between the main channel beams 13 and 13. The depth of thescoop'with respect to the axle on which it is hung is such that when theaxle is elevated the cutting edge of the scoop will swing clear of theground on which the wheels 25 are supported, but when the axle and:trame are dropped said cutting edge of the scoop will engage and enterthe earth beneath the bottom line of the wheels in order that the scoopmay be filled when the Vmachine is drawn toward thel engine. The rearend of the scoop is `supported on the upper edges of the main channelmembers by means of an angle bar 36 secured rigidly to the rear end ofthe scoop and projecting laterally beyond the sides thereof-suiiicientlyfar to engage the main frame members. This angle bar 36 limits thedownward movement of the scoop but does not prevent the elevation of therear c nd thereof. A pair of hooks 37 are operatlvely connected to arock shaft 38 journaled m vthe inclined portions of the main tramemembers and which is operated in turn by a lever 38 adjacent to theoperators platform. Said hooks 37 engage the upper edge of the rear endof the scoop to hold the same downwardlypwith the angle memvist ber. 36against4 the main frame members. This position of the hooks 37 ismaintained .during the filling operation of the scoop.

A rope A is connected to the drum 11 of the engine and adjacent to theexcavator proper is divided into two parts, said arts eing passed aroundor over a series o pulleys 39, 40, 41, and 42, the ends of the said lrope members being connected to the upper edge of the scoop near itsrear end at 43.

, The pulleys 41 arev j ournaled on the rear end of the scoop and allthe others are journaled on the frame. A second power ropel B isconnected to drum 12 of the englne and passes preferably over the top ofthe excavator over the pulleys 44 and 45, thence around thevfixed pulley46, thence it is divided and the parts passed over or around directionpulleys 47 and tee-ir ends being connected to the upper ends of theyokes 26 by means of links 48.

When it is desired to load the scoop the rope B is slackened and theoperator on the excavator withdraws the catches 29 from the hooks 28',permitting the frame to t'all as previously described thus bringing thecutting end of the scoop into engagement with the earth. Power beingapplied to the rope A will cause the entire machine to be drawn towardthe engine filling the scoop with earth. When the scoop is loaded thedraft on the rope A may or may not be stopped but power is applied tothe drum 12 to wind the rope B thereon at a relatively greater speed,whereby the yokes 26 will be drawn l rearwardly with respect to theframe 13, thus elevating the frame and scoop to the carrying positionindicated in full lines in Figpl. The operator will then cause thecatches 29 to engage and hold the yokes in said position. When themachine thus loaded is drawn to the place et deposit the operator willdisengage thel hooks 37 from the rear end of the scoop permitting a continued draft on the rope A to elevate the rear end of the scoop to thedumping position indicated in the diagram of Fig. 10.

The weight of the scoop will restore the same to its normal carryingposition after being dumped.

. The form of the invention indicated in Figs. 11 and 12 is adapted foruse in connection with a traction engine where long hauls are required,although it will be understood that thisvform of the invention isadapted for general operation. Inthis form of the invention the frame131 is connected directly and permanently to the main front axle 49 onwhich the main wheels 50 of the traction engine are j ournaled. The rearend of the frame is supported upon a caster wheel 51 of any suitableconstruction. The

scoop 35v in this form of the invention 1s 4 similar in all substantialrespects to that previously described, and is supported at its'rear endon the frame by an angle bar 36. The front end of the scoop is shown asbeing supported and elevated by differential ulley mechanism connectedto the main rame. Said mechanism comprises a pair of differential hoists52, the upper blocks of which are connected rigidly to a'shaft 53journaled in the upright portion of the frame. The lower blocks 54 ofthe hoists have direct connection to the front end of the scoop.Connected to the shaft 53 is a drum 55 around which is 'an endless rope56 driven from a reversible winch 57 mounted on the engine. When thewinch 57 is operated in one direction the differential hoists 52 willpermit the front. end of the scoop to in proper operative relation totheA main' frame 13'L and to prevent the rearward thrust thereof duetothe engagement of the earth from pushing the scoop rearwardly, a pair oflinksvor barsv 58 are pivotally connected to the front end ofthe scoopat the points where the lower blocks 54 are connected and at their rearends at 58 t-o the main frame members. This connection between the scoopand the frame will permit the lscoop to be raised or lowered at itsfront end during the operation of lilling and also the elevation o therear end during the operation of dumping. Power ropes A are connected tothe scoop in a manner quite similar to the connection of the rope A inthe previous example, and at their forward ends are conneoted'to drums11 carried by the engine and under the direct control of the engineer.These ropes A', however, are employed only for the purpose of dumping inthis form of the invention.

Having thus described the invention, what is claimed as new is: l 1. Anexcavator comprising a frame includmg an upright, a plurality of pulleyscarried by the upright, a scoop mounted within the frame, a pair ofpulleys on the rear end of the scoop, means to support each end of thescoop so that'it may be elevated lndependently of any movement of theother end of the scoop, a rope connected tothe rear end of the scoop andpassing thence over certain of the upright pulleys, thence over thescoop pulleys, and thence over other of the upright pulleys for thepurpose of lifting the rear end of the scoop, and another rope servingto hoist the front end of the scoop.

2. In an excavator, the combination of an axle having an eccentricportion, supporting wheels connected to the concentric 'portion of theaxle, a frame connected to the eccentric portion of the axle, a scoopsupported at one end on the eccentric portion of the axle within theframe and rotatable on said eccentric portion independently of theframe, the other end of the scoop being supported on the frame, andmeansy to swing the axle above the axis of the wheels :forA the a ortioneccentric to the axis of the wheels,

a rame having members mounted on the ec- 'centric portion of the axle, ascoop swung at one end on the eccentric portion of the axle andsupported at its other end on the frame members, means to swing saidraxle about the axis of the wheels to raise and lower the proximate endof the scoop, and means to raise the opposite-end of the scoop.

4. In an excavator, the combination of wheels, an axle on which certainof said wheels are mounted and having an eccentric portion, theeccentric and concentric portions of the axle having shoulderedconnections, a frame, a scoop mounted within the frame and pivotallyconnected at its front scoop mounted thereon, and means for elel vatingthe rear end of the scoop independently of movement of the front end.

5. In an excavator, the combination of support-in wheels, an axleonwhich certain of said w eels are mounted and having a portion Veccentricto the axis of said wheels a frame, a scoop mounted within the frame andswung at one end on the eccentric p ortion of the axle, a pair of yokescooperating with the axle to control Ithe position thereof and therebythe elevation of that end of the scoop swung thereon, interlocking meansbetween the yokes and theframe to ma1ntain the yokes in one position,and means to elevate the opposite end of the scoop.

In testimon whereof I afiix my signature in presence o two witnesses.

ALVAH D. HADSEL.

Witnesses:

EDMUND E. JoNEs, HlLMA PnTnRsoN.

